diff options
| -rw-r--r-- | activerecord/lib/active_record/callbacks.rb | 38 | ||||
| -rw-r--r-- | railties/guides/source/2_3_release_notes.textile | 12 |
2 files changed, 45 insertions, 5 deletions
diff --git a/activerecord/lib/active_record/callbacks.rb b/activerecord/lib/active_record/callbacks.rb index 88958f4583..e375037b5b 100644 --- a/activerecord/lib/active_record/callbacks.rb +++ b/activerecord/lib/active_record/callbacks.rb @@ -104,6 +104,37 @@ module ActiveRecord # The callback objects have methods named after the callback called with the record as the only parameter, such as: # # class BankAccount < ActiveRecord::Base + # before_save EncryptionWrapper.new + # after_save EncryptionWrapper.new + # after_initialize EncryptionWrapper.new + # end + # + # class EncryptionWrapper + # def before_save(record) + # record.credit_card_number = encrypt(record.credit_card_number) + # end + # + # def after_save(record) + # record.credit_card_number = decrypt(record.credit_card_number) + # end + # + # alias_method :after_find, :after_save + # + # private + # def encrypt(value) + # # Secrecy is committed + # end + # + # def decrypt(value) + # # Secrecy is unveiled + # end + # end + # + # So you specify the object you want messaged on a given callback. When that callback is triggered, the object has + # a method by the name of the callback messaged. You can make these callbacks more flexible by passing in other + # initialization data such as the name of the attribute to work with: + # + # class BankAccount < ActiveRecord::Base # before_save EncryptionWrapper.new("credit_card_number") # after_save EncryptionWrapper.new("credit_card_number") # after_initialize EncryptionWrapper.new("credit_card_number") @@ -115,11 +146,11 @@ module ActiveRecord # end # # def before_save(record) - # record.credit_card_number = encrypt(record.credit_card_number) + # record.send("#{@attribute}=", encrypt(record.send("#{@attribute}"))) # end # # def after_save(record) - # record.credit_card_number = decrypt(record.credit_card_number) + # record.send("#{@attribute}=", decrypt(record.send("#{@attribute}"))) # end # # alias_method :after_find, :after_save @@ -134,9 +165,6 @@ module ActiveRecord # end # end # - # So you specify the object you want messaged on a given callback. When that callback is triggered, the object has - # a method by the name of the callback messaged. - # # The callback macros usually accept a symbol for the method they're supposed to run, but you can also pass a "method string", # which will then be evaluated within the binding of the callback. Example: # diff --git a/railties/guides/source/2_3_release_notes.textile b/railties/guides/source/2_3_release_notes.textile index 39f06aac31..55a34c862f 100644 --- a/railties/guides/source/2_3_release_notes.textile +++ b/railties/guides/source/2_3_release_notes.textile @@ -69,6 +69,13 @@ end Turning on nested attributes enables a number of things: automatic (and atomic) saving of a record together with its associated children, child-aware validations, and support for nested forms (discussed later). +You can also specify requirements for any new records that are added via nested attributes using the +:reject_if+ option: + +<ruby> +accepts_nested_attributes_for :author, + :reject_if => proc { |attributes| attributes['name'].blank? } +</ruby> + * Lead Contributor: "Eloy Duran":http://www.superalloy.nl/blog/ * More Information: "Nested Model Forms":http://weblog.rubyonrails.org/2009/1/26/nested-model-forms @@ -268,6 +275,10 @@ h4. Localized Views Rails can now provide localized views, depending on the locale that you have set. For example, suppose you have a +Posts+ controller with a +show+ action. By default, this will render +app/views/posts/show.html.erb+. But if you set +I18n.locale = :da+, it will render +app/views/posts/show.da.html.erb+. If the localized template isn't present, the undecorated version will be used. Rails also includes +I18n#available_locales+ and +I18n::SimpleBackend#available_locales+, which return an array of the translations that are available in the current Rails project. +h4. Partial Scoping for Translations + +A change to the translation API makes things easier and less repetitive to write key translations within partials. If you call +translate(".foo")+ from the +people/index.html.erb+ template, you'll actually be calling +I18n.translate("people.index.foo")+ If you don't prepend the key with a period, then the API doesn't scope, just as before. + h4. Other Action Controller Changes * ETag handling has been cleaned up a bit: Rails will now skip sending an ETag header when there's no body to the response or when sending files with +send_file+. @@ -499,6 +510,7 @@ A few pieces of older code are deprecated in this release: * The +:digest+ and +:secret+ options to +protect_from_forgery+ are deprecated and have no effect. * Some integration test helpers have been removed. +response.headers["Status"]+ and +headers["Status"]+ will no longer return anything. Rack does not allow "Status" in its return headers. However you can still use the +status+ and +status_message+ helpers. +response.headers["cookie"]+ and +headers["cookie"]+ will no longer return any CGI cookies. You can inspect +headers["Set-Cookie"]+ to see the raw cookie header or use the +cookies+ helper to get a hash of the cookies sent to the client. * +formatted_polymorphic_url+ is deprecated. Use +polymorphic_url+ with +:format+ instead. +* The +:http_only+ option in +ActionController::Response#set_cookie+ has been renamed to +:httponly+. h3. Credits |